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Employee Benefit Plans - U.S and International Subsidiary Savings Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
U.S. savings plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expense for the U.S. and international subsidiary savings plan | $ 19 | $ 21 | $ 22
International subsidiary savings plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Expense for the U.S. and international subsidiary savings plan | $ 13 | $ 16 | $ 17

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |